baber/WOPTO huggingface dataset:
Patent GB-684175-A (GB)
Title: Improvements relating to television transmitting apparatus
Inventor: LUBSZYNSKI HANS GERHARD
IPC: H04N5/253
Filed: 1950-05-24
Abstract: 684,175. Volume control. ELECTRIC & MUSICAL INDUSTRIES, Ltd. May 24,1951 [May 24, 1950], No. 12951/50. Class 40 (v). [Also in Group XL (b)] In television transmitting apparatus including a pick-up tube and amplifier, a unitary gain control means is provided arranged to control the gain of the apparatus so that up to an intermediate value of gain, gain control is effected by adjustment of the aperture of the pick-up tube, and above said intermediate value is effected by adjustment of the amplifier gain. In Fig. 1, ganged potentiometers are provided with resistive and conductive sections 5, 6 and 7, 8, respectively, the sections being disposed in complementary positions so that the arm 3 engages, for example, resistive section 5 whilst arm 4 engages conductive section 7. The potential at arm 4 controls the amplifier gain, and the potential at arm 3 controls the setting of the lens iris diaphragm by means of a reversible motor 15 connected in a selfbalancing circuit including a second potentiometer 12 having its arm 13 positioned by the motor shaft 14, 16 is a conventional servo system amplifier. Operation of control 1 increases the gain initially by increase of lens aperture whilst arm 3 engages section 5 and then by increase of amplifier gain whilst arm 4 engages section 8. In order to permit the point of change-over from aperture control to amplifier gain control to be adjusted so that the minimum depth of focus may be preset, a modification, Fig. 2 (not shown), includes potentiometers in which the conductive sections are rotatable and can be set to overlap the resistive sections to any desired extent. In another arrangement, the control may be connected mechanically to the aperture control via a friction clutch and suitable stop means may be provided so that when the aperture has been opened to its maximum or other limiting value, further rotation of the control is not transmitted by the clutch but adjusts the amplifier gain.
Patent GB-1349258-A (GB)
Title: Corrugated plastic article
IPC: H01B7/18
Filed: 1971-05-05
Abstract: 1349258 Corrugated plastics laminates E I DU PONT DE NEMOURS & CO 5 May 1971 [5 May 1970] 13218/71 Heading B5N [Also in Division H1] A corrugated laminate 10 for insulating cables comprises at least two corrugated oriented plastics films (1<SP>1</SP>, 2<SP>1</SP>, 3<SP>1</SP> as shown), the combined thickness of the films being less than 0À125 mm. before corrugation and at least 0À200 mm. after corrugation, and the laminate having a fallout (peak-to-peak thickness lost after heating in an oven for 5 minutes at 150 C.) of less than 35%. The plastics films may be bonded together by heat and pressure or by flame, or adhesives layers 4, Fig. 4, may be used. "Spot" bonding may be performed during the corrugation process and different corrugation profiles, e.g. triangular, square, sinusoidal, trapezoidal &c. may be used. The plastics films may be of biaxially oriented heat-set films of polyethylene terephthalate.
Patent GB-217403-A (GB)
Title: Improvements in and relating to change speed gears
IPC: F16H15/56
Filed: 1923-05-17
Abstract: 217,403. Garrard, C. G. May 17, 1923. Variable-speed epicyclic gearing comprises groups of friction rollers 29 - - 32 rolling round between a driving internal gear 17 and a driven central gear 21, and upon other sun gears 33, 42, 44 adapted to be held fast alternatively. The friction surfaces are curved as described in Specification 211,521, [Class 80 (i), Gearing, Belt &c.]. The sun gear 33 rides between two cones 34, 35 adapted to grip it alternatively. The cone 34 rides on a steep screw 36 upon a driven shaft 18 and is normally held jammed in engagement with the gear 33. This produces a wedging action so that the gearing turns solid for the highest speed. For the second speed, the cone 35 is thrust to the left, disengaging the cone 34 and gripping the gear 33 so as to hold it against rotation. The group rollers roll on the gear 33 so that the gear 21 and shaft 18 are driven more slowly. The operation of the cone 35 is effected through a sleeve 37 and an inclined slot 39 acting against a controllable pin 38 so as to produce the required lateral friction-producing thrust in the curved rolling surfaces. For the low speed, and reverse, a non- rotary double cone 45 is advanced into engagement with the sun gears 42, 44, alternatively, lateral thrust being obtained as before. Loose rings 41, 43 assist the gripping action. A plate clutch 7 operated from a pedal 15 is interposed between an engine shaft 1 and the driving-ring 17. The cones 35, 45 are controlled from a lever 40 suitably guided.
Patent GB-1496615-A (GB)
Title: Dental handpiece
IPC: A61C1/05
Filed: 1976-04-01
Abstract: 1496615 Dental handpieces L P FLATLAND 1 April 1976 13290/76 Heading A5R [Also in Division Fl] A dental turbine has a rotor 36 comprising a hub 37 mounted on a spindle 24 and a web 38 carrying blades 39 and defining annular chambers a, b with adjacent resiliently supported bearings 21, 22. Driving air flowing through inlet duct 11 picks up lubricant from coiled wick 14 and is directed by nozzle 17 to impinge upon blades 39, at least some of the air then being deflected into the chambers a, b before exhausting via restriction 20 through outlet duct 18. Rotor 36 is of gold alloy and has an odd number of blades 39 different from the number of teeth on tool 32. The latter is retained on spindle 24 by a split threaded head 27 accessible by removing threaded plug 29. Casing 6 is split into upper and lower portions 7, 8. For Figures see next column
Patent GB-828401-A (GB)
Title: Improvements in or relating to propellent powders
Inventor: COOK RALPH LUYTIES
IPC: C06B21/00
Filed: 1958-04-28
Abstract: 828,401. Propellent powders. OLIN MATHIESON CHEMICAL CORPORATION. April 28, 1958, No. 133817/58. Class 9(2) Globular particles of a propellent powder base are prepared by forming a suspension of the base lacquer in a non- solvent medium, heating the suspension to a temperature slightly below the boiling point of the lacquer solvent, and mixing the suspension with an excess of a non-solvent at such a temperature that the resultant mixture is considerably above the boiling point of the lacquer solvent. As shown, a lacquer, which may comprise nitrocellulose dissolved in ethyl acetate containing 2 - nitrodiphenylamine, and a non-solvent medium, which may comprise a solution of sodium sulphate and animal glue containing a small proportion of ethyl acetate, are both heated to about 65‹C. and pumped separately into a grainer 1 where the lacquer is subdivided into fine globules. The mixture passes via pipe 2 and orifice 3 into a flash chamber 4 at substantially atmospheric pressure. Prior to reaching the orifice a stream of liquor of the same composition as the suspending medium and heated to about 128‹C. under pressure is mixed with the suspension in the ratio 5 parts liquor to 1 part suspension. The pressure is maintained to prevent boiling of either the ethyl acetate or the water. The drop in pressure on reaching the flash cnamber causes instantaneous vaporization of the ethyl acetate and water. The resultant slurry is centrifuged and the particles washed and dried. Specification 593,793 is referred to.
Patent GB-561266-A (GB)
Title: A process for the manufacture of compositions particularly suitable for road and airfield construction purposes
IPC: C09K17/42
Filed: 1942-09-24
Abstract: Soil containing clay, or clay and sand, and/or silt, and water, and a fluid water-repellant material such as heavy mineral oil residues or light fuel oils, which may be thickened with soaps of calcium, magnesium or aluminium or have added paraffin wax, naphthalene, stearic, palmitic, or naphthenic acids, lanolin, wool grease, thin films of which show rigidity, are mixed, and a flocculant for clay, e.g. calcium hydroxide, calcium chloride, sodium chloride, and aluminium sulphate added at any stage, the product being used for roads, floors, airfields, &c. Specification 537,567 is referred to.
Patent GB-182631-A (GB)
Title: Improvements in dinner or service wagons
IPC: B62B3/02
Filed: 1921-05-12
Abstract: 182,631. Phillips, R. R., and Rodwell, J. May 12, 1921. Folding and collapsable tables.-The side frames of a folding dinner wagon are formed by two X-members 1 pivoted together and carrying at their lower ends two pairs of wheels. The top is formed by a tray 4 pivoted at one end at 2 to the upper ends of opposite members 1. At the other end the tray is hooked to engage over a member fixed to the tops of the other pair of side members 1. A second tray 9 is made in two parts hinged together at 11 and hinged to the. members 1 at 10. This tray forms a strut, any weight on which tends to keep the wagon opened out. One pair of side members are cranked as shown so that the lower parts are approximately vertical and carry wheels which can pivot about a vertical axis. A handle 8 is provided for pushing the wagon. When the latter is folded, the swivelling wheels may be turned so that their planes are at right angles to the planes of the other wheels to enable the collapsed wagon to be rested against a wall.
Patent GB-252733-A (GB)
IPC: F25B41/06
Filed: 1926-05-28
Abstract: 252,733. Hampe, P., and P÷ttgens, J., (trading as Hampe & P÷ttgens). May, 30, 1925, [Convention date]. Thermostats. - The regulating valve e between the condenser and the evaporator of a refrigerating compression machine is controlled automatically by the differential expansion between the valve rod d and its casing g. The red is subjected to the temperature of the compressed gas which passes from the inlet a in the casing, through the passage b, and the outlet c to the condenser, while the casing is provided with a jacket through which cooling-water is passed. The Specification as open to inspection under Sect. 91 (3) (a) comprises also the connection of the jacket with the cooling-water discharge, from the condenser, so that failure of the cooling-water results in the expansion of the casing and consequent automatic closing of the valve. This subject-matter does not appear in the Specification as accepted.
Patent GB-135472-A (GB)
IPC: F16K11/052
Abstract: 135,472. Thebaut, A. G. J. Nov. 16, 1918, [Convention date], Fluid-actuated valves.-A valve device for use with apparatus for heating water, and of the type in which the gas valve is actuated by the flow of water, has gas and water valves, F, D, mounted on a rock shaft G pivoted in a plane partition A separating the rectangular gas and water chambers B, C. The shaft G has a conical bearing surface M pressed against a seat in the casing by means of a rubber washer N, arranged between a flange on the spindle and a copper washer acted on by a screwed gland O.
Patent GB-613413-A (GB)
Title: Improvements in or relating to methods of shipbuilding
IPC: B63B9/00
Filed: 1944-07-17
Abstract: 613,413. Ship construction. BEDFORD, C. P. July 17, 1944, No. 13616. Convention date, March 21, 1942. [Class 133 (ii)] Portions of ship structure of a cellular nature are constructed by first erecting and securing the vertical bulkheads 29 on the inverted deck member 28. This structure is then turned over on to the deck 3, the vertical bulkheads being secured by welds 37. Decks 31, 34 are similarly attached to their related bulkheads 32, 35 and each are then turned over and secured by welds 38, 39. Large units are constructed in sections divided laterally, hoisted into place separately, and then attached to each other by welding.
Patent GB-249700-A (GB)
Title: Improvements in or connected with the lubrication of sleeve valve engines
IPC: F16C33/10
Filed: 1925-05-27
Abstract: 249,700. Barr & Stroud, Ltd., and French, J. W. May 27, 1925. Channels in bearings and internal-combustion engine parts.-In a coupling for driving the sleeve valve A of an engine from a shaft, comprising a cylindrical member B associated with a spherical member 0, isolated oil wells 2 which catch and hold oil are provided in one or both of the members. As shown, the members B, C are associated with the valve A and driving element respectively, and the wells 2 are formed in the member B, but this arrangement may be reversed.
Patent GB-1086808-A (GB)
Title: Tunable frequency selective circuits
IPC: H03H7/01
Filed: 1965-04-01
Abstract: 1,086,808. Aerial coupling circuits; transistor receiving circuits. WESTINGHOUSE ELECTRIC CORPORATION. April 1, 1965 [April 14, 1964], No. 13864/65. Headings H3T and H4A. The input circuit of a transistorized television receiver is tuned over the entire VHF band by a variable capacity, the aerial and transistor input being so coupled in as to provide constant bandwidth. The aerial 10 is coupled into tuned circuit L1, C1 via balanced to unbalanced transformer 20 and series inductor L2, so as to load the tuned circuit with a resistive impedance proportional to the square of the frequency. The inductor L2 may be shunted with a capacitor (Fig. 2, not shown) so as to narrow the bandwidth somewhat, at the high-frequency end; also the coupling coefficient and secondary inductance of the transformer 20 may be so chosen that leakage inductance provides the necessary inductance (Fig. 3, not shown). The transistor TR is in grounded base connection and is coupled in via a series inductor L3: a shunting capacitor C4 compensates at the highfrequency end of the range for the inductive component of the input impedance of the transistor. A stabilizing resistor R3 shunted by decoupling capacitor C4 is connected in series in the emitter lead. The coupling is made such that the load thrown on the tuned circuit is equal to that from the aerial over the tuning range.
Patent GB-1029096-A (GB)
Title: A process for extraction of aliphatic or cycloaliphatic oximes from mineral acid solutions
Inventor: SCHWARZ HANSHELMUT
IPC: C07C/
Filed: 1965-04-01
Abstract: Aliphatic or cycloaliphatic oximes are extracted from aqueous mineral acid solutions with an acidic organic compound which is (a) liquid at the extraction temperature, (b) a polar substance having a dissociation constant of 10-3 to 10-11, (c) chemically inert to the extraction mixture, and (d) not excessively soluble in the aqueous phase; the phases are separated and the oxime is isolated from the acidic organic compound.  The process may be made continuous. Specified acidic organic compounds are phenols such as chlorophenol, 2,4-dichlorophenol, cresol, chlorocresol, cyclohexylphenol and 4-hydroxydiphenyl, and carboxylic acids such as valeric, oleic, chlorostearic and phenylacetic acid.  The extraction temperature may be room temperature or 20-50 DEG  C.
Patent GB-515741-A (GB)
Title: Improvements in methods and devices for producing glass fibres
IPC: C03B37/06
Filed: 1938-05-11
Abstract: 515,741. Making glass fibres. NAAMLOOZE VENNOOTSCHAP MAATSCHAPPIJ TOT BEHEER EN EXPLOITATIE VAN OCTROOIEN. May 11, 1938, No. 14057. Convention date, May 13, 1937. [Class 56] A method of making glass fibres consists in flowing molten glass along pin-like members and drawing the fibres from the points, the members being heated independently of the glass. The temperature of the flowing glass is regulated by the heated members, and the core' of the stream of glass delivered from a member can be at a much higher temperature than the exterior thus facilitating the production of tempered fibres. The member or pin 3, Fig. 1, may be supported in an opening 2 in the floor of a tank furnace 1. The glass flows down the pin, and the rate of flow may be regulated by controlling the temperature of the pin in the zone 6. For this purpose, the pin can be-heated by the induction of a high-frequency electric current in a coil 7 surrounding the pin. The glass is, drawn into fibres from the point 3a by any suitable means. The member may consist, also, of a metal plate 9, Fig. 2, formed with triangular points 9a over which the glass flows. The plate may be heated by electric induction or by a burner 10, and the points 9a may be arranged to project in an horizontal direction. A pin such as 3 may be submerged in the glass with its point directed upwards so that the fibres are drawn vertically, the pin being heated by flames from burners. 'The members may be formed, also, by bending a wire 13, as shown in Fig. 9, the wire being heated electrically. The glass may be heated by using the pin as an electrode for passing electricity into the hot glass. An insulated sleeve may surround the pin to localize the heating to predetermined parts of the pin.
Patent GB-1449673-A (GB)
Title: Containers for fluids and the like
IPC: A62C13/00
Filed: 1973-03-23
Abstract: 1449673 Fire extinguisher discharge assembly GRAVINER Ltd 5 March 1974 [23 March 1973] 14061/73 Heading A5A A discharge assembly for a pressurised fluid container e.g. a fire extinguisher comprises a fluid outlet in the container 10 closed by a frangible diaphragm 18, the assembly comprising a housing 12 for holding a first piston 24 slidably mounted in guide 38 and abutting diaphragm 18 to provide a support therefor, a locking system for the piston 24 comprising three balls 26 located in recesses with inclined surfaces provided in the cylindrical guide, a second piston 28 slidably movable inside the first piston 24 and urged by spring 30 to abut piston 24 and keep the balls 26 in place, a manually-operated control cable 48 and a radial bore 52 connected to a hole 54 which communicates with the space 58 above piston 28 and which can receive and hold an explosive charge. In operation cable 48 is pulled which results in piston 28 moving away from piston 24 so allowing the balls 26 to drop out. Piston 24 then can move away from diaphragm 18 which fractures as a result of fluid pressure so allowing fluid to escape to outlet 46. The assembly can also be opened by detonating an explosive charge in bore 52, the high gas pressure thus produced entering the space 58 and forcing piston 28 away from piston 24 and thus allowing the balls 26 to drop out as described above. On rupture of the diaphragm 18 piston 24 (with piston 28) moves along guide 38 to be held by tabs 60.
Patent GB-298941-A (GB)
Title: Improvements in and relating to liquid-meters
IPC: G01F11/00
Filed: 1928-05-14
Abstract: 298,941. Kleff, J. van, (Assignee of Thiele, B.). Oct. 17, 1927, [Convention date]. Valves closing after predetermined flow.-In a liquid measuring and delivering arrangement of the kind disclosed in Specification 268,290 calibrated outlet nozzles 4, 5 are used in the conduit. 1 for effecting the fractional subdivision of the flow. The fractional part of the flow from the nozzle 5 enters a container 6 which is carried by a pivoted arm 7 connected by links 14, 15 to the conduit vavle 2. The container is supported by a detent 9 and weighted catch lever 11 until it is charged with a predetermined weight of water whereupon the detent is released and the container falls and closes the valve 2 to stop the flow; the nozzle 4 may discharge into the same tank as the container 6, or it may extend elsewhere, as shown in dotted lines. The How is restored by means of an external handle connected to an internal lever 16 so that, for example, a coin may form a coupling element between the handle and the lever 16.
Patent GB-1223782-A (GB)
Title: Microwave telecommunication system
Inventor: SHIKI HARUO
IPC: H04J1/10
Filed: 1969-03-18
Abstract: 1,223,782. Radio signalling. NIPPON ELECTRIC CO. Ltd. 18 March, 1969 [20 March, 1968], No. 14227/69. Heading H4L. A radio communication system comprising terminal stations and at least one relay station with facilities for branching and inserting signal is provided with at least one spare radio channel which is made operative upon failure of a normal radio channel. As shown in Fig. 3, BTn and BTn+ 1 represent terminal stations with facilities for transmitting a TV signal and telephone signals in one direction and telephone signals in the other direction, IT2 representing a relay station. FM modulators M at terminal station BTn co-operate with transmitters T. The relay station includes co-operating heterodyne receivers R and transmitters T and terminal station BTn+ 1 includes receivers R and demodulators D. SP is a spare channel whose use is controlled by a switch SW at station BTn. An initiator I discriminates between TV and telephone signals at the output of each demodulator D by means of a pilot signal transmitted with the signals and also monitors the signal-tonoise level on the pilot signals to determine which of the outputs are to be used and to control the switches SW. Upon detection of a faulty channel by I 21  a signal is transmitted back via CT and CR to switch over that channel to the spare radio channel. A signal from terminal BTn to be branched at IT2 is supplied via terminal TEL IN and transmitted to terminal BTn+ 1 where it is selected by a filter 23, frequency-converted at 24, combined at 25 with the incoming signal and transmitted back to IT2. At IT2 it is supplied via SW 35 and filter BPF to an output terminal DR1. A signal from IT2 to terminal BTn + 1 is supplied via terminal IS2 and filter 37 and frequency-changer 39 to be combined with the incoming signals for transmission to BTn + 1.
Patent GB-333276-A (GB)
Title: Improvements in or relating to multiple ply textile fabrics
IPC: D03D11/00
Filed: 1929-05-08
Abstract: 333,276. Fenner & Co., Ltd., J. H., and Hainsworth, S. B. May 8, 1929. Multiple fabrics for belting or band conveyers comprising outer plies and one or more inner plies having more wefts 4 per unit length than are present in the outer plies, have binders 8, 9, Fig. 3, passing from one outer ply to the other whilst crossing or interlacing several times with wefts in the inner ply or plies. Binders 6, Fig. 2, interlacing with the wefts of a dummy centre ply 7 having no ordinary or ground warp threads may be used. The binder threads may be of braid, with or without a core.
Patent GB-112474-A (GB)
Title: Improvements in or relating to Dye Stuffs and Dyes.
Inventor: MALCOLMSON NORMAN
IPC: C09B61/00
Filed: 1916-10-10
Abstract: 112,474. Malcolmson, N. Oct. 10, 1916. Dyes from natural products.-A dye paste or pulp is obtained by injecting steam into a mass of raw seaweed while retaining the juices in the mass; the paste or pulp may be concentrated by evaporation. A dye extract may be obtained by boiling olive, brown, or red seaweed in an acid solution, and green or khaki extracts may be obtained by treating the residue after the acid extraction with hot alkali; or the weed may be extracted first with hot alkali and then with boiling acid. The acid solution may be evaporated down until caramelization occurs, products of different shades being obtained thereby. Specifications 4166/73, [Class 70, India-rubber &c.], 56/79, 1215/81, and 15233/00 are referred to. According tn the Provisional Specificacation, dyes are obtained by steeping seaweed in water; the weed may be previously chopped up and stacked and allowed to decompose; pastes or extracts may be obtained by means of pressure or steam; the solutions may be concentrated by evaporation or wood flour or other absorbent may be impregnated with the solution; or wood flour may be ground up with the disintegrated seaweed. A variety of shades may be obtained by extracting with hot water the residues resulting from the acid and alkali treatments described above. The various dyes may be used with mordants, or topping baths, or with other dyes; the use as mordants of potash and alum, ferrotannic compounds, ammonium stannochloride, tannin, or used tea leaves as a substitute for tannin, is specified; the dyes may be precipitated by salt, and combine with alumina etc.; salt or sodium sulphate may be added to the dye baths.